Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island?
Suitable climatic conditions for the species are known to improve the breeding success of birds, and the ways in which climatic conditions affect bird breeding have been well studied in temperate and subarctic zones. However, hypotheses made from limited regional information may not be adaptable to...
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The Ornithological Society of Japan
2024
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ftbioone:10.2326/osj.23.65 2024-09-30T14:44:30+00:00 Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi world 2024-09-12 text/HTML https://doi.org/10.2326/osj.23.65 en eng The Ornithological Society of Japan doi:10.2326/osj.23.65 All rights reserved. https://doi.org/10.2326/osj.23.65 Text 2024 ftbioone https://doi.org/10.2326/osj.23.65 2024-09-17T14:22:05Z Suitable climatic conditions for the species are known to improve the breeding success of birds, and the ways in which climatic conditions affect bird breeding have been well studied in temperate and subarctic zones. However, hypotheses made from limited regional information may not be adaptable to other regions, and studies in other areas are needed. It is important to determine the impact of weather conditions on birds on isolated islands, because it is difficult for them to adjust their habitats in response to climate conditions. This study elucidated the effects of weather conditions on the breeding of Ryukyu Scops Owls Otus elegans on the subtropical Minami-daito Island, Japan. The study used data from 806 chicks over a six-year period from 2016 to 2021. We found that heavy rain caused increased chick mortality. Chicks weighed less and had shorter tarsi and wings when precipitation was higher. Structural equation analysis showed that high precipitation reduced chick weight and indirectly increased mortality. Heavy rains were thought to have restricted the foraging behaviour of the parents, resulting in a decrease in chick weight. Text Subarctic BioOne Online Journals Ornithological Science 23 2 |
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English |
description |
Suitable climatic conditions for the species are known to improve the breeding success of birds, and the ways in which climatic conditions affect bird breeding have been well studied in temperate and subarctic zones. However, hypotheses made from limited regional information may not be adaptable to other regions, and studies in other areas are needed. It is important to determine the impact of weather conditions on birds on isolated islands, because it is difficult for them to adjust their habitats in response to climate conditions. This study elucidated the effects of weather conditions on the breeding of Ryukyu Scops Owls Otus elegans on the subtropical Minami-daito Island, Japan. The study used data from 806 chicks over a six-year period from 2016 to 2021. We found that heavy rain caused increased chick mortality. Chicks weighed less and had shorter tarsi and wings when precipitation was higher. Structural equation analysis showed that high precipitation reduced chick weight and indirectly increased mortality. Heavy rains were thought to have restricted the foraging behaviour of the parents, resulting in a decrease in chick weight. |
author2 |
Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi |
format |
Text |
author |
Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi |
spellingShingle |
Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
author_facet |
Naoki Kanasugi Akira Sawada Haruka Nakamura Shun Kumagai Haruka Ono Mari Esashi Shuya Nagai Ryota Murakami So Shiraiwa Tetsuya Iwasaki Masaoki Takagi |
author_sort |
Naoki Kanasugi |
title |
Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
title_short |
Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
title_full |
Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
title_fullStr |
Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
title_full_unstemmed |
Do Weather Conditions during the Brood Rearing Period Affect the Survival of Owl Chicks on a Subtropical Island? |
title_sort |
do weather conditions during the brood rearing period affect the survival of owl chicks on a subtropical island? |
publisher |
The Ornithological Society of Japan |
publishDate |
2024 |
url |
https://doi.org/10.2326/osj.23.65 |
op_coverage |
world |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
https://doi.org/10.2326/osj.23.65 |
op_relation |
doi:10.2326/osj.23.65 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.2326/osj.23.65 |
container_title |
Ornithological Science |
container_volume |
23 |
container_issue |
2 |
_version_ |
1811645739076419584 |